SU441558A1 - Input device - Google Patents

Description

The invention relates to external devices of electronic digital computers (ECL) that perform the preliminary preparation and input of information in the ECM.

In the known devices for the preparation and input of information with the use of intermediate carriers (punched cards and punched tapes), electromechanical devices are used that do not differ in high reliability and speed. A large number of difficulties are caused by the operation and storage of a large number of punched cards and punched tapes.

The purpose of the invention is to increase the speed and increase the reliability of the device.

This is achieved in that the proposed device comprises a magnetic drum drive (liffi) with a control circuit, a serially connected switchboard an MB character register and a control circuit connected to the control unit, and a serially connected address register MB, a comparison circuit and an address counter connected to the unit control, address counter

5 is connected to the address registers of the EPM and the switch connected to the control circuit, the MB address register, the third character register, the control circuit and the register

0 MB character that is connected to the decoder.

The drawing shows the block diagram of the device for entering information.

5 The device contains electrified typewriters (EPM) I and 2, drive 3 on a magnetic drum (W), registers 4, 5 and 6 of the symbol EPM. registers 7 and 8 addresses

0 EPM, printing circuits9 and 10, query registers II and switching 12.

Signals of request from. EPM arrive on the register And requests. Register 12 switching connects

5 schemes of the selected EMF. From its character register, information is transmitted to

general register b of the EMP symbol and then through the switch 13 and the control circuit l4 to drive 3. Registers 7 and 8 of the address of the EMP store the addresses of the MB of each EPM. Moreover, the higher bits of the address registers are implemented in the form of toggle registers, thereby ensuring memory protection and the possibility of a rigid distribution of the memory of the magnetic drum between the EPM.

The address of the selected EIM is taken to the address counter 15, the current address of the magnetic drum is generated on the MB address register 16, and the comparison circuit 17 compares the current address MB with the address counter. The symbol read from the MB enters the register 18 of the MB symbol and in the case of a comparison in the control circuit 19, through the decoder 20 enters the circuits 9 and 10, which control the printing of the EMF. A 13 MB switch connects MB circuits either for exchanging with EFM. or for reading from the MB in the computer 21. The secondary control of the listed blocks is implemented using the control unit 22. The operation of the EMP is controlled by the operators 23, 24, the operation of the digital computer by the operator 25.

The operation of the device begins with the reception of requests from the EMP. The request register is constantly open for receiving. Upon receipt of the next request from the EMP, the request register allows reception of information (character) from the EPM to the register of the EPM symbol and then locks the EPM keyboard until the end of the entire transmission cycle of information on the MB with the EPM.

At the end of the full cycle of inamation transfer from the previous request (i-i), the control unit polls the next register of the request register and, if there is a request, generates a Start signal, sends a request to the switching register with which it transfers information from the EMP character register to the general register the symbol of the EPM and the transfer of the address from the register of the address of the EPM to the address counter. Thereafter, the communication cycle with the magnetic drum begins. In order to communicate with the MB, the operation of the control unit 22 is synchronized by the sync pulses received from the MB. The communication with the MB is carried out through the scheme Il and the switch 13. Scheme 14 are electronic circuits that perform the switching of the MB paths in accordance with h9;

recording information on the LB, reading information, address and sync signals from MB.

Signals from the higher bits of the counter 15 switch the paths of the magnetic drum, and on the address register 16, the current address MB is generated from the signals from the magnetic drum. When comparing the MB address with the address on the counter 15, the comparison signal from the circuit

17 enters control block 22 This block opens the input circuits MB for receiving and recording information from register 6 of the EPM symbol.

After recording, the address comparison cycle is repeated, and when comparing, the symbol is read from the magnetic drum to the register.

18 characters MB. The symbol transmitted on the magnetic drum, stored on the register 6 of the EMP symbol, is compared for control with the symbol received on the magnetic drum, which is located on register 18, and in the case of non-comparative the repeated recording and indication is organized. When comparing through the control unit, one is added to the counter 15, and the contents of the counter are rewritten into the address register of the EPM. The information from register 18 through the decoder 20 enters the printing circuit, which is selected using register: 12, switching, and the character is printed on the EPM and the corresponding register bit II of the request is reset.

After receiving the new value of the address on the register of the EMP symbol and transmitting the information (symbol) to the printing circuit of the EPM, the device is ready to process the new request, and the control unit 22 detects the next (Ktl) bit of the request register and generates a Start signal when there is a request. If there is no request, the next bit is polled and so on around the ring before the request is detected. The Start signal is delayed only by the request (c-fl) in the case when printing by (c-1) has not finished yet and the information for printing has already been prepared for, i.e. only two requests can be processed simultaneously (one in print, the other in a communication cycle with MB).

Switching the switch 15 to the communication with the E1ShM / is carried out by the control unit 22 upon request from the computer and after completing the next request from the EMP. After reading the information from the entire magnetic drum in the computer, the switch automatically switches to communicate with the computer. For the duration of the connection between the MB and the PC, the keyboard of all the EMF is blocked. Corrections and editing of the information prepared and entered into the computer are performed by software. For long-term storage of information, a tape archive system is organized. SUBJECT OF THE INVENTION An information input device comprising electrified printing machines (EPM) connected to a request register, which is connected to a control unit and a switching register associated with the control unit, the first and second EP character registers connected to the third EPM character register, which are connected to the control unit, and the EMP address registers connected to the control unit, which is connected to printing circuits and the decoder, characterized in that, in order to increase speed and increase reliability of its operation, it contains a magnetic drum drive (MB) with a control circuit, a serially connected switch, an MB character register and a control circuit connected to the control unit, and the serial MB address register connected in series, a comparison circuit and an address counter connected to the control unit and the address counter is connected to the registers of the ZIM address and the switch connected to the control circuit, the MB address register, the third character register, the control circuit and the MB register that is connected to the decoder .